CUSHIONING MECHANISM, HEAT SEALING DEVICE, AND FILM WRAPPING MACHINE
A cushioning mechanism of a heat sealing device applied in a film wrapping machine has a leading cylinder, an elastic unit, a first cushioning plate, a second cushioning plate, and a cushioning component. The elastic unit, the first cushioning plate, and the second cushioning plate are sequentially disposed on the leading cylinder along an axial direction of the leading cylinder; the first cushioning plate and the leading cylinder rotate synchronously. The cushioning component has a cushioning groove and a cushioning protrusion respectively formed on the first cushioning plate and the second cushioning plate. When the second cushioning plate is rotated, the cushioning protrusion presses one of two groove walls of the cushioning groove such that the first cushioning plate can rotate synchronously with the second cushioning plate for transmission or move relative to the leading cylinder to compress the elastic unit for cushioning.
The present invention relates to a heat sealing device in a film wrapping machine, and particularly to a cushioning mechanism, a heat sealing device, and a film wrapping machine.
2. DESCRIPTION OF RELATED ARTWhen packing, a film wrapping machine grips and heats up a wrapping film by two gripping boards of a heat sealing device to connect and seal edges of the wrapping film. To keep the two gripping boards tightly gripping the wrapping film and prevent a driver for driving the two gripping boards from overloading, the heat sealing device needs to have a cushioning mechanism.
A conventional cushioning mechanism in the heat sealing device of the film wrapping machine often has multiple tension springs and components for mounting the multiple tension springs; specifically, the multiple tension springs are disposed circularly along a circumference direction of a transmission wheel being a gear or a belt pulley. When the driver continues to operate after the two gripping boards tightly grip the wrapping film, elasticity of the multiple tension springs provide a cushioning effect and prevent the driver from overloading.
However, the conventional cushioning mechanism needs the multiple tension springs for elastic cushioning; thereby, more components need to be manufactured and processed for mounting the multiple tension springs. Further, mounting and positioning of the multiple tension springs is cumbersome. Therefore, the conventional cushioning mechanism is time-consuming and inconvenient in use.
SUMMARYTo overcome the shortcomings of the conventional cushioning mechanism of the heat sealing device in the film wrapping machine, the present invention provides a cushioning mechanism, a heat sealing device, and a film wrapping machine which operate without the multiple tension springs and are easier to be mounted and maintained.
The cushioning mechanism provided by the present invention is characterized in that the cushioning mechanism comprises a leading cylinder, an elastic unit, a first cushioning plate, a second cushioning plate, and at least one cushioning component. The elastic unit is elastically deformable under compression. The first cushioning plate rotates synchronously with the leading cylinder. The at least one cushioning component has a cushioning groove and a cushioning protrusion matching the cushioning groove. The cushioning groove has a first groove wall and a second groove wall located on two opposite sides of the cushioning groove. The first groove wall extends from a bottom of the cushioning groove and along an axial direction of the leading cylinder, and the second groove wall extends from the bottom of the cushioning groove and extends obliquely relative to the axial direction of the leading cylinder. The elastic unit, the first cushioning plate, and the second cushioning plate are sequentially disposed on the leading cylinder along the axial direction of the leading cylinder, and two opposite ends of the elastic unit respectively abut the first cushioning plate and the leading cylinder. The cushioning groove and the cushioning protrusion are respectively formed on the first cushioning plate and the second cushioning plate. When the second cushioning plate is rotated to allow the cushioning protrusion to press the first groove wall, the first cushioning plate, the second cushioning plate, and the leading cylinder rotate synchronously; when the second cushioning plate is rotated to allow the cushioning protrusion to press the second groove wall, the second cushioning plate rotates relative to the first cushioning plate and pushes the first cushioning plate to move along the axial direction of the leading cylinder and compress the elastic unit.
For the cushioning mechanism as described above, the cushioning mechanism has multiple said cushioning components.
For the cushioning mechanism as described above, the first cushioning plate and the second cushioning plate are made of self-lubricating material.
For the cushioning mechanism as described above, the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
The heat sealing device provided by the present invention is characterized in that the heat sealing device comprises a driver, two gripping boards, a transmission mechanism, and the cushioning mechanism as described above. The transmission mechanism is connected to the driver and the two gripping boards and has a transmission wheel and a transmission shaft. The transmission wheel is configured to be rotated by the driver, and the transmission shaft is configured to drive the two gripping boards to approach each other or depart from each other. The second cushioning plate and the transmission wheel rotate synchronously, and the leading cylinder and the transmission shaft rotate synchronously.
The film wrapping machine provided by the present invention is characterized in that the film wrapping machine comprises the heat sealing device as described above.
By means of the aforementioned technical features, the present invention provides efficacy as follows: the present invention provides the cushioning mechanism, the heat sealing device, and the film wrapping machine of the present invention, wherein the cushioning mechanism has the leading cylinder, the first cushioning plate, the second cushioning plate, the elastic unit, and the cushioning component between the first cushioning plate and the second cushioning plate for cushioning; thereby, the two gripping boards of the heat sealing device can grip a wrapping film tightly and continuously for a period of time, and the driver for driving the two gripping boards can also be prevented from overloading. Compared to the conventional cushioning mechanism which requires mounting and positioning multiple tension springs for cushioning, the cushioning mechanism of the present invention has simple configurations and is more convenient to be mounted and maintained.
To understand the technical features of the present invention and utility effects thereof and enable the present invention according to the specification, detailed descriptions of preferred embodiments shown in the drawings are hereinafter described.
With reference to
Specifically, the transmission mechanism 2 has a driving wheel 20, a transmission belt 21, the transmission wheel 22, the transmission shaft 23, two first synchronous pulleys 24, two second synchronous pulleys 3, and two synchronous belts 40. The driving wheel 20 is disposed on an output shaft of the driver 50, and the transmission belt 21 is connected to the driving wheel 20 and the transmission wheel 22. The transmission wheel 22 is disposed on the transmission shaft 23 and is configured to rotate synchronously with or relative to the transmission shaft 23 via the cushioning mechanism 6. The two first synchronous pulleys 24 are disposed on the transmission shaft 23 and rotate synchronously with the transmission shaft 23. Each one of the two synchronous belts 40 is connected to a respective one of the two first synchronous pulleys 24 and a respective one of the two second synchronous pulleys 3. With the configurations described above, when the driver 50 starts to operate, the two synchronous belts 40 drive the two gripping boards 1 to approach or depart from each other. More specifically, with reference to
With reference to
Specifically, the cushioning groove 11 has a first groove wall 13 and a second groove wall 14 respectively located on two opposite sides of the cushioning groove 11. The first groove wall 13 extends from a bottom of the cushioning groove 11 along an axial direction of the leading cylinder 10, and the second groove wall 14 extends from a bottom of the cushioning groove 11 and extends obliquely relative to the axial direction of the leading cylinder 10. When the driver 50 drives the two gripping boards 1 to depart from each other as shown in
When the driver 50 continues to operate after the two gripping boards 1 approach each other and tightly grip the wrapping film, the transmission wheel 22 and the second cushioning plate 80 are driven by the driver 50 to rotate synchronously. With reference to
In use, the driver 50 first drives the two gripping boards 1 to depart from each other by the transmission of the transmission mechanism 2 as shown in
The present invention provides the heat sealing device and the cushioning mechanism 6 thereof, wherein the cushioning mechanism 6 has the leading cylinder 10, the first cushioning plate 70, the second cushioning plate 80, the elastic unit 90, and the cushioning component on the first cushioning plate 70 and the second cushioning plate 80 for cushioning. Thereby, the two gripping boards 1 can grip the wrapping film tightly and continuously for a period of time, and the driver 50 can also be prevented from overloading. Compared to the conventional cushioning mechanism which needs to mount and position multiple tension springs for cushioning, the cushioning mechanism 6 in the present invention has simple construction and is convenient for mounting and maintenance.
In the preferred embodiment, the transmission mechanism 2 has the driving wheel 20, the transmission belt 21, the transmission wheel 22, the transmission shaft 23, the two first synchronous pulleys 24, the two second synchronous pulleys 3, and the two synchronous belts 40 to transmit and allow the driver 50 to drive the two gripping board 1. In other embodiments, the transmission mechanism 2 may transmit with different configurations, e.g., the driving wheel 20 and the transmission wheel 22 may adopt gears and be engaged with each other, and the transmission belt 21 can be omitted. As long as the transmission mechanism 2 has the transmission wheel 22 for the second cushioning plate 80 to be fixed to and the transmission shaft 23 to rotate synchronously with the leading cylinder, wherein the transmission wheel 22 and the transmission shaft 23 are configured to rotate relatively or synchronously, the cushioning mechanism 6 can perform cushioning during the heat sealing process; the configuration of the transmission mechanism 2 is not limited to the preferred embodiment.
With reference to
With reference to
In the preferred embodiment, the first cushioning plate 70 and the second cushioning plate 80 are plates made of a self-lubricating material, which prolongs service lives of the first cushioning plate 70 and the second cushioning plate 80. Specifically, the self-lubricating material may be one of Polytetrafluoroethylene (PTFE), Polyimide (PI), Polyetheretherketone (PEEK), Polyphenylene Sulfide (PPS), Polyamide (PA), Polyoxymethylene (POM), and Ultra High Molecular Weight Polyethylene (UHMWPE).
With reference to
The present invention further provides a film wrapping machine, and the film wrapping machine has the heat sealing device of the preferred embodiment having the cushioning mechanism 6, and the film wrapping machine also has other devices and mechanisms of the conventional film wrapping machine to cooperate with the above-mentioned heat sealing device. Therefore, the film wrapping machine of the present invention is more convenient to be assembled and maintained compared to film wrapping machines with the conventional cushioning mechanism.
Through the foregoing paragraphs, the preferred embodiments and detailed descriptions thereof are described for presenting the technical means adopted by the present invention to solve the problem, not to constrain the scope of the claimed invention. Anything that is literally consistent with the claims of the present invention and variations and modifications that are equivalent to the claims are encompassed by the scope of the claims of the present invention.
Claims
1. A cushioning mechanism comprising:
- a leading cylinder;
- an elastic unit being elastically deformable under compression;
- a first cushioning plate rotating synchronously with the leading cylinder;
- a second cushioning plate; and
- at least one cushioning component having a cushioning groove having a first groove wall located on one of two opposite sides of the cushioning groove and extending from a bottom of the cushioning groove along an axial direction of the leading cylinder; and a second groove wall located on the other one of the two opposite sides of the cushioning groove, extending from the bottom of the cushioning groove, and extending obliquely relative to the axial direction of the leading cylinder; and a cushioning protrusion matching the cushioning groove;
- wherein the elastic unit, the first cushioning plate, and the second cushioning plate are sequentially disposed on the leading cylinder along the axial direction of the leading cylinder, and two opposite ends of the elastic unit respectively abut the first cushioning plate and the leading cylinder; the cushioning groove and the cushioning protrusion are respectively formed on the first cushioning plate and the second cushioning plate; when the second cushioning plate is rotated to allow the cushioning protrusion to press the first groove wall, the first cushioning plate, the second cushioning plate, and the leading cylinder rotate synchronously; when the second cushioning plate is rotated to allow the cushioning protrusion to press the second groove wall, the second cushioning plate rotates relative to the first cushioning plate and pushes the first cushioning plate to move along the axial direction of the leading cylinder and compress the elastic unit.
2. The cushioning mechanism as claimed in claim 1, wherein the cushioning mechanism has multiple said cushioning components.
3. The cushioning mechanism as claimed in claim 1, wherein the first cushioning plate and the second cushioning plate are made of self-lubricating material.
4. The cushioning mechanism as claimed in claim 1, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
5. The cushioning mechanism as claimed in claim 2, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
6. The cushioning mechanism as claimed in claim 3, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
7. A heat sealing device comprising:
- a driver;
- two gripping boards;
- a transmission mechanism connected to the driver and the two gripping boards and having a transmission wheel configured to be rotated by the driver; and a transmission shaft configured to drive the two gripping boards to approach each other or depart from each other; and
- the cushioning mechanism as claimed in claim 1;
- wherein the second cushioning plate and the transmission wheel rotate synchronously, and the leading cylinder and the transmission shaft rotate synchronously.
8. The heat sealing device as claimed in claim 7, wherein the cushioning mechanism has multiple said cushioning components.
9. The heat sealing device as claimed in claim 7, wherein the first cushioning plate and the second cushioning plate are made of a self-lubricating material.
10. The heat sealing device as claimed in claim 7, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
11. The heat sealing device as claimed in claim 8, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
12. The heat sealing device as claimed in claim 9, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
13. A film wrapping machine comprising the heat sealing device as claimed in claim 7.
14. The film wrapping machine as claimed in claim 13, wherein the cushioning mechanism has multiple said cushioning components.
15. The film wrapping machine as claimed in claim 13, wherein the first cushioning plate and the second cushioning plate are made of a self-lubricating material.
16. The film wrapping machine as claimed in claim 13, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
17. The film wrapping machine as claimed in claim 14, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
18. The film wrapping machine as claimed in claim 15, wherein the cushioning mechanism has an elastic ring disposed between and abutting against the first cushioning plate and the second cushioning plate.
Type: Application
Filed: Dec 26, 2023
Publication Date: Oct 17, 2024
Applicant: TAIWAN HIGHDREAM INTELLECTUALIZED MACHINERY CO., LTD. (Taichung City)
Inventor: Ying Zheng (Taichung City)
Application Number: 18/396,336